Configuration nvidia driver For the LightDM display manager.

Installing Package

~ ❱ sudo pacman -S nvidia nvidia-utils nvidia-settings xorg-server-devel opencl-nvidia xorg-xrandr

Disable Nouveau Driver

The following is configuration for /usr/lib/modprobe.d/nvidia-utils.conf

blacklist nouveau

Use NVIDIA graphics only

Configuration for /etc/X11/xorg.conf.d/10-nvidia-drm-outputclass.conf

Section "OutputClass"
    Identifier "intel"
    MatchDriver "i915"
    Driver "modesetting"
EndSection

Section "OutputClass"
    Identifier "nvidia"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "AllowEmptyInitialConfiguration"
    Option "PrimaryGPU" "yes"
    ModulePath "/usr/lib/nvidia/xorg"
    ModulePath "/usr/lib/xorg/modules"
EndSection

Set-Up LightDM

For the LightDM display manager :

/etc/lightdm/display_setup.sh

#!/bin/sh
xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto

Make the script executable.

~ ❱ sudo chmod +x /etc/lightdm/display_setup.sh

Now configure lightdm to run the script by editing the [Seat:*] section in /etc/lightdm/lightdm.conf

...
[Seat:*]
display-setup-script=/etc/lightdm/display_setup.sh
...

Fix Screen Tearing

Screen tearing usually happens on Arch Linux laptop that uses Prime to switch between NVIDIA and Intel drivers.

create a new config file /etc/modprobe.d/nvidia-drm-nomodeset.conf

options nvidia-drm modeset=1

Finally update intramfs.

~ ❱ sudo mkinitcpio -P

Now reboot and your display manager should start.